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Thread: My DIY speakers -"J&N"
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December 26, 2022, 04:29 PM #51
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Re: My DIY speakers -"J&N"
i guess i will stick to accuton and dynaudio for my clients
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December 26, 2022, 04:34 PM #52
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December 26, 2022, 05:25 PM #53
Re: My DIY speakers -"J&N"
So are you using gated or ground plane to measure ..?
Could you list more specific data ,
Sensitivity: distance and power
Impedance : min and nominal
FR +/- deviation over usable bandwidth
Regards,* An Audiophile is only as old as his latest Class D incarnation *
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January 12, 2023, 01:07 PM #54
Re: My DIY speakers -"J&N"
When constructing the cabinet of a loudspeaker, must be found determine speaker acoustic center.
First of all, determining the speaker acoustic center is useful when designing loudspeaker crossovers. The point from where the speaker is radiating sound is somewhere near the voice coil area. As a result, big speakers, like woofers, have the acoustic center somewhat in the back. On the other hand, tweeters, which are more shallow, are in front, acoustically, compared to woofers. This offset, whether expressed in units of time or distance, must be taken into account to have an accurate representation of the phase between the drivers of the loudspeaker.
Let's look at our situation;
The configuration of SEAS speakers;
400h400.png
I’m making the measurement using sweeps from 200 Hz till 20 kHz. Not going down till 20 Hz for 2 reasons. First, my room only accommodates accurate measurement only till 200 Hz. Second, starting from 200 Hz protects the tweeter. The loudspeaker is placed on a small box to raise it up slightly. This is to place the speaker in the center of the room and reduce early room reflections. The microphone is placed at 1.2 m from the floor, on the same axis with the middle of the midrange driver. Microphone is 1 meter away from the speaker.
I take a total of four measurements. .
The topic of the constructive placement of speakers on the front panel of the cabinets / or elsewhere / is extensive and cannot be described briefly.
I assume you have information on the subject and I have roughly answered your question as to .
P.S.
There is always a risk of a language barrier, I speak several languages, English is not my native language, sorry!
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January 13, 2023, 05:45 PM #55
Re: My DIY speakers -"J&N"
Sounds like you are using gated measurements , if so 500 hz would be realistic for accuracy in a big room, with speakers 8 feet off floor ( tweeter height) ..!
* An Audiophile is only as old as his latest Class D incarnation *
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January 14, 2023, 02:14 PM #56
Re: My DIY speakers -"J&N"
You always have to start with a simulation somehow, I start with cardboard boxes , I'm currently working on a project with a sphere - again with cardboard.
The acoustic center is always neglected by speaker manufacturers, they just don't pay attention to it. In fact, the subject is very vast, I have no problem convincing you of my methods of building DIY loudspeakers, I am 63 years old and should be supposed to be knowledgeable the rules for their construction.
P.S.
Is it possible to show me your DIY projects of loudspeakers?
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January 15, 2023, 07:45 PM #57
Re: My DIY speakers -"J&N"
You and me both Jororaitchev! Lots of folks who like to joke around on these critical audio discussion forums, but I'm a bit more serious myself. This is the only known picture of Mr Waynes DIY horn system that I'm aware of.
Smalfut.jpg
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January 15, 2023, 11:29 PM #58
Re: My DIY speakers -"J&N"
I dont get how a technical question turns into a joke fest , usually from those still clueless swinging nails and hammer pretending to be in the know ..!
Now we have the secretive acoustic centers only known my internet legends ..!
Regards ..!
PS : Nice pic AJ , must have been in ur afro days ..* An Audiophile is only as old as his latest Class D incarnation *
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January 16, 2023, 09:47 AM #59
Re: My DIY speakers -"J&N"
C'mon Mr Wayne, show the world those Yeti horns we've long heard rumors about. At least J and I would be interested, maybe MEP too.
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January 17, 2023, 02:33 PM #60
Re: My DIY speakers -"J&N"
I would settle for a reasonable technical answer Mr AJ, are you one of those guys not in the know about Acoustic centers as per Mr jororaitchev
I dont do DIY projects like you AJ, nor did i keep my JBL speaker purchases like the one MEP has (40 yrs ago ) , no sir i actually got paid to design and build stuff , from recording studios to hi end hifi stores, yes my designs actually sold in stores , hi end retail stores ...
BTW , My yeti horns are gonna be kept under wraps for now , but dont mind, i do enjoy coming down to talk and catch up on the many cognitive dissonant circular chit chat of the modern audiophile
cheers* An Audiophile is only as old as his latest Class D incarnation *
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January 17, 2023, 03:18 PM #61
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January 17, 2023, 04:41 PM #62
Re: My DIY speakers -"J&N"
That was a few weeks ago , opportunity lost...................!
* An Audiophile is only as old as his latest Class D incarnation *
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AudioShark forum is a leading forum site for High End Audio Discussion, Stereo System Discussion, Home Theater System Discussion, Best Home Stereo System Discussion, Home Theater Installation Discussion etc.
The AudioShark forum was created for sharing the passion of high-end Audio. We have Audiophiles from all over the world participating and sharing their knowledge. From novice to experts, you will find a friendly environment for discussing about High End Audio, Stereo System, Home Theater System, Home Stereo System, Home Theater Installation, Amplifiers, Speakers, Subwoofers, Integrated System, Acoustic treatments & Digital Room Corrections and many more.
At AudioShark, we also have incorporated an exciting Marketplace where members can peruse terrific buys on used gear, as well as meet dealers and discuss the purchase of new gear.
We are as crazy about this hobby as you are! So come on in and join us! Audioshark.org the Friendliest Audio Forum!
Industry Participation Disclosure : The owner and administrator of Audioshark is the owner of Suncoast Audio LLC in Sarasota Florida. Suncoast Audio has a full brick and mortar presence in Sarasota with several great show rooms with many world class brands. More information can be found at http://www.suncoastaudio.com
Audioshark is a community of like minded individuals. Audioshark welcomes participation from all manufacturers and owners of all brands and products. It is our belief that online forums provide a community of like minded audiophiles and music lovers to encourage the growth of this wonderful hobby.
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